Printing-telegraph.



'Noi 818,477.

R. J. SHEEHY.

PRINT-NG TELEGRAPH.

l APPLICATION FILED MAY 2z, 1903.

2 SHEETS-SHEET 2 main line, as desired. A main batter may alsobe locatedat the distant end of t e line or at intermediate points, if -founddesirable.

R represents a neutral relay through which the line is rounded, and aswitchi s may be placed in t e line for the purpose offopening thecircuit to break the sending instrument. At a point between the neutralrelay and the line coming to the instrument I -place thecircuit-interrupter. This may conslst, as shown, of the plateA, ofinsulating material, in which the end of the type-wheel shaft may'have abearing. On this shaft is a toothed wheel C, having .halfas many teethas there are divisions on the type-wheel. A'n arm D, carrying aninsulated point d, preferably of agate or some similar material, 1snormally drawn toward the toothed wheel to bring the point intoengagement therewith by a spring d, which maybe adjustable. This levercarries a contact d2, which works against an adjustable contact d, thecontacts being drawn together bythe action of the springr d. The mainline is connected Yiwith the Llever, and consequently with the contactcl2, and extends thence `from the adjustable Acontact d3, throughtheswitch s and relay R to line or earth. As the type-Wheel shaft isrotated,

as hereinafter described, lthe toothed wheel thereon acting upon theagate point of the lever opens and closes the contacts cl2 and d3. Thearmature R of the relay R, `which is provided with an ordinaryretractable spring, plays between two adjustable contact-posts 1' and 1.As shown in Fig. 1, the instrument is in condition for transmission. Themain-line circuit is open at the contacts Z2 and d. The armature-lever Ris therefore against its back contact r, and a local circuit through thebattery L B is completed as follows: from one pole of the battery L B tothe armature-lever, its stop r, the lever S2 of the switch, and by wire1 of the coils of the differentially-wormd print-magnet P M, thence byWire 2 through the coil of an escapcmentmagnet E to thel opposite poleof the battery. The armature of this magnet on one end or side of theT-shaped .escapement-lever F is attracted, and one of theescapement-pallets f is thrown into position to engage one of the teethof the toothed wheel G, fast on the power-driven type-wheel shaft andhaving ralf as many teeth as there are divisions-in the type-wheel. Itwill be noted that in this position of the apparatus the point d of themechanical circuit-interrupter is about just resting on the point of oneof the teeth of the wheel' C. Assuming, therefore, that none of' thekeys is de aressed, the type-wheel shaft rWill be moved y its poweruntil the teeth of the wheel G comes against the point of theescapcment-pallet just mentioned, and the shaft is rotated a sufficientdistance to permit 'the point al on the lever ofthe circuit-interruptorto enter between two of maar? the teeth of the wheel C and com lete themain-line circuit at the contacts 2 and d3, On this completion .of thecircuit the relay R is energized, its armature is attracted, and acircuit from the local battery L B is oompleted from the armature-leverR and itsv stop 1", the arm Stof the switch and by wire 3 through theother coil of the print-magnet, thence by wire 4 through the coil of theescapement-magnet E to the opposite pole of the battery. This magnetattracts its armature on the escapement-lever, and the lever is thrownin the opposite direction, and the operation above described isrepeated, except that the movement of the wheel Gr and of the ty e-wheelshaft to bring the tooth of the whee a ainst the escapement-pallet fcauses the w lreel C to lift the lever D, and the main-line circuit isinterru ited. This operation being repeated indefinitely, the typewheelshaft rotates with a regular uniform motion. If, however, one of thekeys K K shaft would be arrested either with t 1e main-f line circuitopen or closed at the contacts d2 da, as the case may be. In thedrawings one of the keys K is shown depressed. The trailer of thesunflower is in Contact with the segment thereof corresponding with lthedepressed key, and a local circuit is completed from the battery L Bthrough wire 5, con.

tacts of key K,wire 6, sunflower-segment and trailer, and coil ofarrester-ma et H to the opposite pole of the battery. he armaturelever Hof this magnet is attracted and its endv la is thrown into engagementwith a toothed arresting-wheel l on the type-wheel shaft, and which hasas many teeth as there arevdivisions on the type-wheel. The shaft is.-therefore arrested with the escapementwheel Gr and the circuit-interru)ter wheel C substantially in the positions in icated. The opencondition of the main circuit is therefore prolonged. during the timethat the type- Wheel shaft is arrested by the depression of the key Thecurrent from the battery L B has therefore time to fully charge orenerfrize the print-magnet P M. lts armature ever T is attracted and theplaten T is thrown up against the type-wheel. 0f course any suitableconstruction of print lever, platen., paper-feeding device, Sac., may beemployed. `When the key K is raised, the armature of thearresting-magnet is by its sprinr thrown out of engagement with thewheeljl. and the step-by-step rotation of the type-wheel shaft isresumed until another key is depressed, the typewheel arrested, and theimpression taken in the manner de. scribed.

W'hen the instrument is to be arranged for receiving, the gang-switchSt' S3 is thrown to the left. This changes the connections of the localbattery anu reverses the order in which the -two escapement-palletsengage the K, &c., should be depressed, the ty e-wheel ILO ble or hingederm, hut preferably nn elnstieerin (Y. rThis erm lies in sn annulergroove in nv sleeve 0 on the type-wheel shaft and euri-ying the traileroi the sunflower.. The sleeve is slotted for the reception of s pin onthe shaft, so that :in endwise motion muy he im parted thereto. When thegang-switch is thrown to the lett to adept the instrument for thereception, the :nun 02 drnws the trailer out of engagement with theSunilower. ln

order to permit of' an adjustment of these parts so as to produce theproper oontnetpressure between the trailer und the segg ments, the endof the rod O is Screw-threaded und passes through the spring-:mn O?,there heine :L clamp-nut on each side thereof.

ln Fie'. 2,1) indicates the pinion through which the typedrheel shaftdriven hy n. eloelr-tininor any other suitable power. The pinion isprel'einhlvxf mounted on n sleeve, connected hy :t spirnl springlreiivelopinpT the shslt with n coller ndjustnhly mounted on the shzrft,the. eonstruetion heine` ordinary nndwell understood. The:n'restiiiig-wheel l is mounted upon a. huh enveloping the shalt :rndprovided with n set-serey to rigidi)Y nt tneh it to the shalt. 'ihoesenpenreni-wheel G- is simihirl)7 mounted.

TWhen the arrangementiiordisengaging the trailer troni' the sunflowersegments is not adopted, it is desirable to employn switch L loropeningr the loenl eireuit ol the keyboardeontnets when the instrumentis receiving,

Ui' ourse it is obvious thntthe iden'. oi re. during; the load on thereceiver hy throwinpr the treiler out of Contact .with the snnllower isuppliezrhlo to other torms ol' printing-telegrnphs.

Obviously instead oi using n struifght eurrent rnd neutral relays theeireuitinter rupter may n pole-ehnnger :rnd reverse ourrents sent toline7 in which event polarized relays would he employed. This muy he.done hy providing,` another lever D to he operarted hy the wheel (l undsuitnhle eleetrieul rfoinieetio. s which would he lound adventn-geousind'uplexinp; or quadroplexingv the instruments.

Any suitable ordinary unison deviees muyI he, employed.

l I, l l

l. in ny printing-lelegrnph7 the eoinhinntion oi the type-wheel undshzilt, n 11min-line hslter, e.. eireuit-interrupter included in themarin line, und :returned by the shaft to ehnnue the eondition of theline-eireuit at earch step or moremenli ol' thel type-wheel, the11min-line relay, two lornl circuits eontrolled zit the iront :nid heel;stops of' its nrmnture-lever, n l nl heitery i'or sind eireuits, itdouhleswoun'l print-magnet having n coil in ezu'h lor-:il ein-uit, n,muguet in each local eireuit for elleetiugf n` movemevt oi the typewheelenf-h time the eondition of the Circuit of the line is elnmfrmhthe lier::nd their loenl eireuits ineludin;r the sunllower segments :intltrai-iler, :rnd nn :nresting-magnet eenimon to nil the ley-eirouits forarresting the t vpe-\\"neel when ir key is depressed and therehyprolonging,r the then open or closed emidilion oi' the line-circuit,whereby the prinlsnnunet is charged h3' the prolonged elosinpT ol theloeul rireuit and un impression from the tvpenvheel eli'eeted,suhstin'itizrlly :Ls sei l'ofrth.

2. ln n. print'ingytelegrrnih, the combination ol' the type-wheel; itsshol't, n manndine butt-env, n. iimin-line eii" nit-interrupter hetn-:rted h v 'the wheel or shnlt, the'line-relny, the loenl hnttery, lwoeireuits therefrom eentrolled :tt the iront :nid hau-lil stops ol" the`re.- lziy und ezn'h ineludirnr :L (foil ol' :t print-magnet und :inesenpement magnet, the eseepemerwvheel und lever, the keys, their loezrleireuits irludine; the sunllov Yer segments and li'niler, thenrrestine'nnngnet eommon to all the heV-rireuis, ils zn'mnture-lever,and. the arrestiiur-wheel on the 1 \'pe\rheel shalt, Suhstnntinlly :isset forth. j

IS. in n. printinudelegrnph, llie, eomloinittion ol ihe sunhnrer, itstrariler und ine-ans l'or disengngiufg the trailer l'rom the sunflowerwhen reeeivinfr.

lo n. printinudelegrzuih, the. eomhinntion oll the sunllower, itstiniler, :L switch for. eonneetinrr the instrument il'or eithertransmission or reeeplion, nud devices operated by the swileh when movedlinto position l'or reeeption lo disennnge the trnfiler l'rom the sun?liou'er.

5. lhe eomhinution o' two printingtele- Iu'rsph instrumenls eonneeted hyn line rind` 1 one nrrnnged l'or transmission to, the. other,

